The red "squiggle" represents the coordinate boundary (end/start) of a circular sequence. The sequence origin (position 1) lies immediately to the right of the "squiggle".
What is the Red Squiggle I Sometimes See when I Create or Edit a Primer?
The red "squiggle" represents the coordinate boundary (end/start) of a circular sequence. The sequence origin (position 1) lies immediately to the right of the "squiggle".